[INFO] fetching crate yml_dict_li 0.1.4...
[INFO] testing yml_dict_li-0.1.4 against 1.95.0 for beta-1.96-2
[INFO] extracting crate yml_dict_li 0.1.4 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate yml_dict_li 0.1.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate yml_dict_li 0.1.4
[INFO] tweaked toml for crates.io crate yml_dict_li 0.1.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yml_dict_li 0.1.4 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 61 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pipe v0.4.0
[INFO] [stderr]   Downloaded xerr v0.1.16
[INFO] [stderr]   Downloaded loginit v0.1.18
[INFO] [stderr]   Downloaded ifs v0.1.47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76f0d25922e2b2bf2bed9982c6fa03d17bd5d3645e2e0402184561023011e7dd
[INFO] running `Command { std: "docker" "start" "-a" "76f0d25922e2b2bf2bed9982c6fa03d17bd5d3645e2e0402184561023011e7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76f0d25922e2b2bf2bed9982c6fa03d17bd5d3645e2e0402184561023011e7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f0d25922e2b2bf2bed9982c6fa03d17bd5d3645e2e0402184561023011e7dd", kill_on_drop: false }`
[INFO] [stdout] 76f0d25922e2b2bf2bed9982c6fa03d17bd5d3645e2e0402184561023011e7dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7165bf3ddd7e42cbdf14c78ec8095b2085dedb0625967d5722d8b90b9cfef00
[INFO] running `Command { std: "docker" "start" "-a" "b7165bf3ddd7e42cbdf14c78ec8095b2085dedb0625967d5722d8b90b9cfef00", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling aok v0.1.18
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling xerr v0.1.16
[INFO] [stderr]    Compiling pipe v0.4.0
[INFO] [stderr]    Compiling tokio v1.52.1
[INFO] [stderr]    Compiling ifs v0.1.47
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ifs-0.1.47/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(doc_cfg)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ifs` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b7165bf3ddd7e42cbdf14c78ec8095b2085dedb0625967d5722d8b90b9cfef00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7165bf3ddd7e42cbdf14c78ec8095b2085dedb0625967d5722d8b90b9cfef00", kill_on_drop: false }`
[INFO] [stdout] b7165bf3ddd7e42cbdf14c78ec8095b2085dedb0625967d5722d8b90b9cfef00
